<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程详情 开始 -->
    <section class="container">
      <section class="path-wrap txtOf hLh30">
        <a href="#" title class="c-999 fsize14">首页</a>
        \
        <a href="#" title class="c-999 fsize14">课程列表</a>
        \
        <span class="c-333 fsize14">{{courseInfo.title}}</span>
      </section>
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <section class="p-h-video-box" id="videoPlay">
            <img height="100%" :src="courseInfo.cover" :alt="courseInfo.title" class="dis c-v-pic" />
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <h2 class="hLh30 txtOf mt15">
              <span class="c-fff fsize24">{{courseInfo.title}}</span>
            </h2>
            <section class="c-attr-jg">
              <span class="c-fff">价格：</span>
              <b class="c-yellow" style="font-size:24px;">￥{{courseInfo.price}}</b>
            </section>
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize14">主讲： {{courseInfo.teacherName}}&nbsp;&nbsp;&nbsp;</span>
            </section>
            <section class="c-attr-mt of">
              <span class="ml10 vam">
                <em class="icon18 scIcon"></em>
                <a class="c-fff vam" title="收藏" href="#">收藏</a>
              </span>
            </section>
            <section class="c-attr-mt" v-if="Number(courseInfo.price) === 0 || isbuyCourse">
              <a href="#" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
            </section>
            <section class="c-attr-mt" v-if="Number(courseInfo.price) > 0 && !isbuyCourse">
              <a href="#" title="立即观看" class="comm-btn c-btn-3" @click="createOrder">立即购买</a>
            </section>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <!-- 去掉样式覆盖clearfix -->
          <ol class="thr-attr-ol">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.buyCount}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.lessonNum}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.viewCount}}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"></div>
      </div>
      <!-- /课程封面介绍 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section class="course-txt-body">
                      <!-- 将内容中的html翻译过来 -->
                      <p v-html="courseInfo.description">{{ courseInfo.description }}</p>
                    </section>
                  </div>
                </div>
                <!-- /课程介绍 -->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 文件目录 -->
                          <li
                            class="lh-menu-stair"
                            v-for="(chapter,index) in chapterList"
                            :key="index"
                          >
                            <a href="javascript: void(0)" :title="chapter.title" class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"></em>
                              {{chapter.title}}
                            </a>
                            <ol class="lh-menu-ol" style="display: block;">
                              <li
                                class="lh-menu-second ml30"
                                v-for="(video,index) in chapter.children"
                                :key="index"
                              >
                                <a
                                  :href="'/player/' + video.videoSourceId"
                                  :title="video.title"
                                  target="_blank"
                                >
                                  <span class="fr" v-if="video.isFree === true">
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </span>
                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>
                                  {{video.title}}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                </div>
                <!-- /课程大纲 -->
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">主讲讲师</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a href="#">
                        <img :src="courseInfo.avatar" width="50" height="50" alt />
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a
                        class="c-333 fsize16 fl"
                        :href="'/teacher/'+courseInfo.teacherId"
                      >{{courseInfo.teacherName}}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{courseInfo.intro}}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
          </div>
        </aside>
        <div class="clear"></div>
      </div>
    </section>
    <!-- /课程详情 结束 -->
    <!-- 课程评论 -->
    <div class="mt50 commentHtml"></div>
    <h6 class="c-c-content c-infor-title" id="i-art-comment">
      <span class="commentTitle">课程评论</span>
    </h6>
    <section class="lh-bj-list pr mt20 replyhtml">
      <ul>
        <li class="unBr">
          <aside class="noter-pic">
            <img width="50" height="50" class="picImg" :src="comment.avatar" />
          </aside>
          <div class="of">
            <section class="n-reply-wrap">
              <fieldset>
                <textarea
                  name
                  v-model="comment.content"
                  placeholder="输入您要评论的文字"
                  id="commentContent"
                ></textarea>
              </fieldset>
              <p class="of mt5 tar pl10 pr10">
                <span class="fl">
                  <tt class="c-red commentContentmeg" style="display: none;"></tt>
                </span>
                <input type="button" @click="addComment()" value="回复" class="lh-reply-btn" />
              </p>
            </section>
          </div>
        </li>
      </ul>
    </section>
    <!-- 评论列表开始 -->
    <section class>
      <section class="question-list lh-bj-list pr">
        <ul class="pr10">
          <li v-for="(comment,index) in data.records" v-bind:key="index">
            <aside class="noter-pic">
              <img width="50" height="50" class="picImg" :src="comment.avatar" />
            </aside>

            <div class="of">
              <span class="fl">
                <font class="fsize12 c-blue">{{comment.nickname}}</font>

                <font class="fsize12 c-999 ml5">评论：</font>
              </span>
            </div>

            <div class="noter-txt mt5">
              <p>{{comment.content}}</p>
            </div>

            <div class="of mt5">
              <span class="fr">
                <font class="fsize12 c-999 ml5">{{comment.gmtCreate}}</font>
              </span>
            </div>
          </li>
        </ul>
      </section>
    </section>
    <!-- 评论列表结束 -->
    <!-- 公共分页 开始 -->

    <div class="paging">
      <!-- undisable这个class是否存在，取决于数据属性previous -->

      <a :class="{undisable: !data.previous}" href="#" title="首页" @click.prevent="gotoPage(1)">首</a>

      <a
        :class="{undisable: !data.previous}"
        href="#"
        title="前一页"
        @click.prevent="gotoPage(data.current-1)"
      >&lt;</a>

      <a
        v-for="page in data.pages"
        :key="page"
        :class="{current: data.current == page, undisable: data.current == page}"
        :title="'第'+page+'页'"
        href="#"
        @click.prevent="gotoPage(page)"
      >{{ page }}</a>

      <a
        :class="{undisable: !data.next}"
        href="#"
        title="后一页"
        @click.prevent="gotoPage(data.current+1)"
      >&gt;</a>

      <a
        :class="{undisable: !data.next}"
        href="#"
        title="末页"
        @click.prevent="gotoPage(data.pages)"
      >末</a>

      <div class="clear" />
    </div>

    <!-- 公共分页 结束 -->
  </div>
</template>
<script>
import courseApi from "@/api/course";
import commentApi from "@/api/comment";
import orderApi from "@/api/order";
import cookie from "js-cookie";
export default {
  asyncData({ params, error }) {
    return { courseId: params.id };
  },
  data() {
    return {
      // 分页器数据
      data: {},
      page: 1,
      limit: 4,
      comment: {
        courseId: "",
        teacherId: "",
        content: "",
        courseId: "",
        avatar: "",
        nickname: "",
        memberId: ""
      },
      courseInfo: {
        id: "",
        title: "",
        price: 0,
        lessonNum: 0,
        cover: "",
        buyCount: 0,
        viewCount: 0,
        description: "",
        teacherId: "",
        teacherName: "",
        intro: "",
        avatar: "",
        subjectLevelOneId: "",
        subjectLevelOne: "",
        subjectLevelTwoId: "",
        subjectLevelTwo: ""
      },
      chapterList: [],
      isbuyCourse: false
    };
  },
  created() {
    this.initCourseInfo();
    this.initComment();
    this.initUserInfo();
  },
  methods: {
    /*=============================订单========================================*/
    createOrder() {
      orderApi.createOrder(this.courseId).then(response => {
        this.$router.push({ path: "/order/" + response.data.data.orderId });
      });
    },
    /*=============================课程信息========================================*/
    initCourseInfo() {
      courseApi.getcourseInfo(this.$route.params.id).then(response => {
        this.courseInfo = response.data.data.courseInfo;
        this.chapterList = response.data.data.chapterList;
        this.isbuyCourse = response.data.data.isbuyCourse;
      });
    },
    initComment() {
      this.gotoPage();
    },
    initUserInfo() {
      var userStr = cookie.get("guli_ucenter");
      var userInfo = "";
      if (userStr) {
        userInfo = JSON.parse(userStr);
      }
      //console.log("用户信息:" + userInfo.id);
      this.comment.avatar = userInfo.avatar;
      this.comment.nickname = userInfo.nickname;
      this.comment.memberId = userInfo.id;
    },
    addComment() {
      this.comment.courseId = this.courseId;
      this.comment.teacherId = this.courseInfo.teacherId;
      commentApi.addComment(this.comment).then(response => {
        if (Number(response.code) === 20000) {
          this.$message({
            type: "success",
            message: "回复成功"
          });
          this.comment.content = "";
          this.gotoPage(this.data.current);
        }
      });
    },
    gotoPage(page = 1) {
      commentApi
        .getCommentList(page, this.limit, this.courseId)
        .then(response => {
          this.data = response.data.data;
        });
    }
  }
};
</script>